AWS Aurora DB Cluster for Serverless Terraform Module.
Gives you:
- A DB subnet group
- An Aurora DB cluster
- Optionally RDS 'Enhanced Monitoring' + associated required IAM role/policy (by simply setting the
monitoring_intervalparam to >0 - Optionally sensible alarms to SNS (high CPU, high connections, slow replication)
Terraform version 0.10.3 or newer is required for this module to work.
Ensure any variables you add have a type and a description. This README is generated with terraform-docs:
terraform-docs md . > README.md
It is recommended you always create a parameter group, even if it exactly matches the defaults. Changing the parameter group in use requires a restart of the DB cluster, modifying parameters within a group may not (depending on the parameter being altered)
resource "aws_sns_topic" "db_alarms_56" {
name = "aurora-db-alarms-56"
}
module "aurora_db_56" {
source = "../.."
name = "test-aurora-db-56"
envname = "test56"
envtype = "test"
subnets = ["${module.vpc.private_subnets}"]
azs = ["${module.vpc.availability_zones}"]
security_groups = ["${aws_security_group.allow_all.id}"]
username = "root"
password = "changeme"
backup_retention_period = "5"
final_snapshot_identifier = "final-db-snapshot-prod"
storage_encrypted = "true"
apply_immediately = "true"
monitoring_interval = "10"
cw_alarms = true
cw_sns_topic = "${aws_sns_topic.db_alarms_56.id}"
db_parameter_group_name = "${aws_db_parameter_group.aurora_db_56_parameter_group.id}"
db_cluster_parameter_group_name = "${aws_rds_cluster_parameter_group.aurora_cluster_56_parameter_group.id}"
}
resource "aws_db_parameter_group" "aurora_db_56_parameter_group" {
name = "test-aurora-db-56-parameter-group"
family = "aurora5.6"
description = "test-aurora-db-56-parameter-group"
}
resource "aws_rds_cluster_parameter_group" "aurora_cluster_56_parameter_group" {
name = "test-aurora-56-cluster-parameter-group"
family = "aurora5.6"
description = "test-aurora-56-cluster-parameter-group"
}resource "aws_sns_topic" "db_alarms" {
name = "aurora-db-alarms"
}
module "aurora_db_57" {
source = "../.."
engine_version = "5.7.12"
name = "test-aurora-db-57"
envname = "test-57"
envtype = "test"
subnets = ["${module.vpc.private_subnets}"]
azs = ["${module.vpc.availability_zones}"]
security_groups = ["${aws_security_group.allow_all.id}"]
username = "root"
password = "changeme"
backup_retention_period = "5"
final_snapshot_identifier = "final-db-snapshot-prod"
storage_encrypted = "true"
apply_immediately = "true"
monitoring_interval = "10"
cw_alarms = true
cw_sns_topic = "${aws_sns_topic.db_alarms.id}"
db_parameter_group_name = "${aws_db_parameter_group.aurora_db_57_parameter_group.id}"
db_cluster_parameter_group_name = "${aws_rds_cluster_parameter_group.aurora_57_cluster_parameter_group.id}"
}
resource "aws_db_parameter_group" "aurora_db_57_parameter_group" {
name = "test-aurora-db-57-parameter-group"
family = "aurora-mysql5.7"
description = "test-aurora-db-57-parameter-group"
}
resource "aws_rds_cluster_parameter_group" "aurora_57_cluster_parameter_group" {
name = "test-aurora-57-cluster-parameter-group"
family = "aurora-mysql5.7"
description = "test-aurora-57-cluster-parameter-group"
}resource "aws_sns_topic" "db_alarms_postgres96" {
name = "aurora-db-alarms-postgres96"
}
module "aurora_db_postgres96" {
source = "../.."
engine = "aurora-postgresql"
engine_version = "9.6.3"
name = "test-aurora-db-postgres96"
envname = "test-pg96"
envtype = "test"
subnets = ["${module.vpc.private_subnets}"]
azs = ["${module.vpc.availability_zones}"]
security_groups = ["${aws_security_group.allow_all.id}"]
username = "root"
password = "changeme"
backup_retention_period = "5"
final_snapshot_identifier = "final-db-snapshot-prod"
storage_encrypted = "true"
apply_immediately = "true"
monitoring_interval = "10"
cw_alarms = true
cw_sns_topic = "${aws_sns_topic.db_alarms_postgres96.id}"
db_parameter_group_name = "${aws_db_parameter_group.aurora_db_postgres96_parameter_group.id}"
db_cluster_parameter_group_name = "${aws_rds_cluster_parameter_group.aurora_cluster_postgres96_parameter_group.id}"
}
resource "aws_db_parameter_group" "aurora_db_postgres96_parameter_group" {
name = "test-aurora-db-postgres96-parameter-group"
family = "aurora-postgresql9.6"
description = "test-aurora-db-postgres96-parameter-group"
}
resource "aws_rds_cluster_parameter_group" "aurora_cluster_postgres96_parameter_group" {
name = "test-aurora-postgres96-cluster-parameter-group"
family = "aurora-postgresql9.6"
description = "test-aurora-postgres96-cluster-parameter-group"
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For more information, see our module contribution guide.
To see who's already involved, see the list of contributors.
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| apply_immediately | Determines whether or not any DB modifications are applied immediately, or during the maintenance window | string | "false" |
no |
| auto_minor_version_upgrade | Determines whether minor engine upgrades will be performed automatically in the maintenance window | string | "true" |
no |
| auto_pause | When to perform DB auto pause | string | "true" |
no |
| azs | List of AZs to use | list | n/a | yes |
| backup_retention_period | How long to keep backups for (in days) | string | "7" |
no |
| cw_alarms | Whether to enable CloudWatch alarms - requires cw_sns_topic is specified |
string | "false" |
no |
| cw_eval_period_connections | Evaluation period for the DB connections alarms | string | "1" |
no |
| cw_eval_period_cpu | Evaluation period for the DB CPU alarms | string | "2" |
no |
| cw_eval_period_replica_lag | Evaluation period for the DB replica lag alarm | string | "5" |
no |
| cw_max_conns | Connection count beyond which to trigger a CloudWatch alarm | string | "500" |
no |
| cw_max_cpu | CPU threshold above which to alarm | string | "85" |
no |
| cw_max_replica_lag | Maximum Aurora replica lag in milliseconds above which to alarm | string | "2000" |
no |
| cw_sns_topic | An SNS topic to publish CloudWatch alarms to | string | "false" |
no |
| database_name | Master DB name | string | "" |
no |
| db_cluster_parameter_group_name | The name of a DB Cluster parameter group to use | string | "default.aurora5.6" |
no |
| db_parameter_group_name | The name of a DB parameter group to use | string | "default.aurora5.6" |
no |
| enabled | Whether the database resources should be created | string | "true" |
no |
| engine_version | Aurora database engine version. | string | "5.6.10a" |
no |
| envname | Environment name (eg,test, stage or prod) | string | n/a | yes |
| envtype | Environment type (eg,prod or nonprod) | string | n/a | yes |
| final_snapshot_identifier | The name to use when creating a final snapshot on cluster destroy, appends a random 8 digits to name to ensure it's unique too. | string | "final" |
no |
| iam_database_authentication_enabled | Whether to enable IAM database authentication for the RDS Cluster | string | "false" |
no |
| identifier_prefix | Prefix for cluster identifier | string | "" |
no |
| max_capacity | The max capacity for database | string | "8" |
no |
| min_capacity | The min capacity for database | string | "2" |
no |
| monitoring_interval | The interval (seconds) between points when Enhanced Monitoring metrics are collected | string | "0" |
no |
| name | Name given to DB subnet group | string | n/a | yes |
| password | Master DB password | string | n/a | yes |
| performance_insights_enabled | Whether to enable Performance Insights | string | "false" |
no |
| port | The port on which to accept connections | string | "3306" |
no |
| preferred_backup_window | When to perform DB backups | string | "02:00-03:00" |
no |
| preferred_maintenance_window | When to perform DB maintenance | string | "sun:05:00-sun:06:00" |
no |
| publicly_accessible | Whether the DB should have a public IP address | string | "false" |
no |
| security_groups | VPC Security Group IDs | list | n/a | yes |
| skip_final_snapshot | Should a final snapshot be created on cluster destroy | string | "false" |
no |
| snapshot_identifier | DB snapshot to create this database from | string | "" |
no |
| storage_encrypted | Specifies whether the underlying storage layer should be encrypted | string | "true" |
no |
| subnets | List of subnet IDs to use | list | n/a | yes |
| username | Master DB username | string | "root" |
no |
| tags | Tags for the created resources | map | {envname="${var.envname}", envtype="${var.envtype}"} |
no |
| Name | Description |
|---|---|
| cluster_endpoint | The 'writer' endpoint for the cluster |
| cluster_identifier | The ID of the RDS Cluster |
| reader_endpoint | A read-only endpoint for the Aurora cluster, automatically load-balanced across replicas |